1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b19957ca775508e5fc020dc1a6d054fe04cd340cfdaa0afaf1699f5ad75729. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/967ae72c-11c7-4b0d-af3c-6bab9bb84712.json and https://artists.proofprofile.net/proofs/artist/967ae72c-11c7-4b0d-af3c-6bab9bb84712.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc81f12b98f1d0308202289f03d1e263fecf3e04525bff6e64c96265736ddb7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812062985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a675c98811e3ac2ad56807956bcf60514e1bd3c556b30f7aff953b22debd7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812198727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965fb5b51ee07fe467e5b214389aaa41be9a3acb3cc57b49dad488950363e1ab. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812103964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a376679bcdfb4518254483111e7c4c117976feda44844ebfe4f8b06d8018624. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812215602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b86fa181553e01514bed940429629c3dfd8f47c6011dec7d0b0404b1802fb1a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812216492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf47d2fceb0faa6ce2b86ddd271e07a838fabfa3f922c080541a6084c108b8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812216495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a9d0a0a27b27ccafab78cec3aa904eada01bb7a8ea4062222f1698482335cd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812220343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a4aeacf94cdf0cf9cd6a6656361a795b594c58e61362ed59ad5b515dd34cf6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812234853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc5bdc8b532519cd4cc101afaf7c9a1507e3f6a742208d2055bab2127a43e9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812239190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf88f4cbb3090a4039eb4bf2b0b16164e21d3248c576c3c3a5dd6b6f0f51d596. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812346471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb2ae2876c3be15c650f3a43d0f29cf0b14b4ba96f0a059af4a0c43cac2f75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e245d4801da44452e7b63ad45ffc5d7163fc602c391431e3d55a2e38921c159. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff17b49a8f04094af9ddf5b3b42faab0662908401130ddb9eb414f43a81f197. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1618d4075c87e171256a8123ec968ab60a1528457d726b480bbd79e3dbfb153d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd844b6ccf0e87d310c9cb14b71e3b10eee337257759f4899b3f1801b27e39af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac021c3a75eaa6c71f9571e81e5b13ab995e8f3738f274190e853944d164319. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e64874469cd499d4da4895f99e6ece15d1fb83ff7db9c57994182caf1ab82d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e32bac22602a01aacc7a854711404645e1566a87b932c5320aed3317d10ba7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf88f4cbb3090a4039eb4bf2b0b16164e21d3248c576c3c3a5dd6b6f0f51d596. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812346471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ceed11bf4f60dbebd67db72a6f0530c8a9726f8b522b39d5bb6cce2b89aa55. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00aade7c3f92428b024d266d0ad849a51d413722fc12a290a77da168b1593a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812347115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809e2504f84a9d5a26fb8f31d47991d83c93441059f2d850fd9ab3904e2ae7b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812226905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a9d0a0a27b27ccafab78cec3aa904eada01bb7a8ea4062222f1698482335cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812220343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb0d1ccd7eb122e3d5af79acbcc419e33bdef2129d2a3dd0bb5cfa3d4e50407. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812221677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d194ef345a68d54857d75e0d16971a7a5f7cc3f2949e4b031d47413f1155e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT2352395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb67887256a8231ebe3be75afe1505ef8208c8c293548952eca0b87ca59dce. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812365631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1242f7c8c2fbc771aed74f87a8d0a261463e8b9a08e7b06ad168cda512698a81. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812410930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b7fce13fc895d3512ea26a2e4e55e558487193b2aa63e8d9421f0e67ec17a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG2317643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb67790524ec1711e52b411975da3084788c387b9faafdfa15617e2942a256c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32275e0445a7cbf4ee0e3b6079b4b510736321e8e0dbf802664eb928687c6be0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72513346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89737c0894d3a3fd48281ed0cfa12c394077cb3f2e09364e6037f81e5eb4ef9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN82375632.